package com.xujinchen.operator;

public class Demo01 {
    public static void main(String[] args) {
        //ctrl+d;复制当前行到下一行
        int a =10;
        int b =20;
        int c =25;
        int d =25;

        System.out.println(a+b);
        System.out.println(a-b);
        System.out.println(a*b);
        System.out.println(a/(double)b);
    }
}
